/Engine/Source/Runtime/CoreUObject/Public/UObject/LinkerLoad.h
Locates the class adjusted index and its package adjusted index for a given class name in the import map
bool FindImportClassAndPackage ( [FName](API\Runtime\Core\UObject\FName) ClassName, [FPackageIndex](API\Runtime\CoreUObject\UObject\FPackageIndex) & ClassIdx, [FPackageIndex](API\Runtime\CoreUObject\UObject\FPackageIndex) & PackageIdx )